Direct and Inverse Proportion + 2 more topics

When two quantities are directly proportional, it means that as one quantity increases, the other increases by the same factor, and vice-versa. Think of it as a constant multiplier.

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When two quantities, let's say x and y, are in inverse proportion, it means their product is always a constant value. We write this as:

x * y = k

where k is the constant of proportionality.

Alternatively, we can express y as being inversely proportional to x:

y = k / x

This equation tells us that if x increases, y must decrease for k to remain constant.

Polygons are 2D shapes made of straight line segments joined end-to-end, forming a closed figure. They don't have curves, and the sides don't cross each other.

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Geometrical constructions are all about precision. You'll use your ruler to draw straight lines and your compass to draw arcs and circles, ensuring measurements and angles are exact.

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